Have time to designate pairs of cards while they are on top of each other. Nothing complicated! You just need speed and attention. After all, everything in this game you have to do, literally, with lightning speed. Late, miss the opportunity. The time to complete each test is limited, as is the number of possible errors. But the complexity of each of the tasks is growing exponentially. Can you complete everything and complete the lightning challenge? Then go ahead! Just look for pairs and remove them until you reach the desired progress. Good luck in the game!